PhysicsLight: refractionJAMB
A coin lies at the bottom of a tank of water 12 cm deep. Find its apparent depth. (Refractive index of water = 4/3)
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Answer: A. 9 cm
Apparent depth = real depth ÷ n = 12 ÷ 4/3 = 9 cm.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.